Transmission mechanism.



- 116.721,736. l l PATBNTEDMAR. 351903. E.' OSBORN` TRANSMISSIONMECHANISM. ArrLIdATIon Hmm snm. 3.1901. l lo 101m.. Q5.2.311321958311311. j'

A TTO drawings, forming a part of this specification, in which similarcharacters of reference indi-L UNITED STATES PATENT OFFICE.

ALDEN E. OSBORN, OF NEW YORK, N. Y.

TRANSMISSION M ECHANISM.'

SPECIFICATION forming part of Letters Patent No. 721,736, dated March 3,1903.

pplication tiled September 3, 1901. Serial, No. 74.197. (No model.)

To @ZZ whom t may concern,.-

V Be it known that I, ALDENEYOSBORN, a citizen of the United States, andaresident of the city of New York, borough of the Bronx, in the countyand Stateof New York, have invented a new and Improved TransmissionMechanism, of which the following is a full, c lear, andeXactdescription. v

This invention relates to meansfoltransmitting motion at differentspeeds and in dif ferent directions.

It comprises a gearing especially adapted for use on motor-vehicles,although it may be used for other purposes. The gearing provides abraking means for thevehicle, as well as means for driving it ahead andbackward at various speeds.

This specification is the specic disclosure of one form of my invention,while the claims define the actual scope thereof.

Reference is to be had to the accompanying cate correspondingparts inall the iigures.

Figure 1 is a longitudinal section of the gear.

' of Fig. 1, and Fig. 3 is a section on the line 3 3 of Fig. l.

4 represents the element to be driven. This may be either the axle ofthe vehicle or a shaft connected therewith. As here shown, it is a shaftmounted loosely in bearings 5 and has two transverse openings 6 and 7formed' therein.

8 indicates a drum to which movement is imparted from the motor or othersource of power, and 9 indicates asprocket-wheel keyed to the shaft 4and with which, if desired, .a sprocket-chain may be engaged to drivethe axle of the vehicle, assuming that the appa' ratus is used in thismanner.

10 indicates a bar which passes transversely through the opening 6 inthe shaft 4 and carries a clutch-ring 11', adapted to engage with theinterior wall of the drum 8. By engaging the parts 8 and 10 together theshaft 4 will be driven directly from the drum 8, and this constitutesthe high-speed forwardmovement of the gearing. To the bar 10 isconnected a rod 12, which extends centrally through the shaft 4l and hasa collar 14 attached to its outer end, by which the clutch Fig. 2 is across-section on the line 2 2V 411 may be thrown from the inactiveposition (shown in Fig. 1) to its active position.

The drum 8 is keyed to a sleeve 15, which runs loosely on the shaft 4and has a pinion 16 formed thereon. This pinion meshes with two or morepinions 17, carried, respectively, on stub-shafts 18, attached to theweb of a drum 19. Over this drum works a suitable brake-strap 20,connected Vwith a stationary part of the framing of the vehicle or otherapparatus to which the invention is applied. By means of this brake 20the drum 19 may be held against rotation.

21 indicates a drum mounted partly on the hub 22 of the `drum 19 and onthe shaft 4. This drum carries an internal gear-ring 23, with which thepinions 17 are meshed. The web of the drum 19 is broken away, as bestshown in Fig. 2, so as to permit the pinions 17 to project into meshwith the gear-ring 23.

24 indicates a clutch which is mounted to slide in the opening 7 of theshaft 4 and is lar -27 turns freely within the hub of the drum 19, andconsequently when the clutch 24 lies in transverse alinement with thering or collar 27 the vclutch is out of engagement with both of thedrums 19 and 21. The collar 27 serves principally to increase thebearing-suryfaceof ,the drum 19 on the shaft 4. At the .right-hand sideof the collar 27 the hub of the drum 19 is recessed to receive theclutch,

whereby this drum may be fastened to the shaft 4, and at the left-handside of the collar 27 the hub of thel drum 21 is recessed,` so as toreceive the clutch 24, and thus fasten the drum 21 to the shaft 4. Whenthe drum 21 is fast to the shaft, the drum 19 is loose, and vice versa.

29 indicates abrake-strap which works on the drum 21 the same as thestrap 20.

Assuming that the drum 8 was being driven ahead in order to drive theshaft 4 at full speed, the clutch 11 should be engaged with the drum,thus connecting the drum Sdirectly with the shaft 4. To reduce the speedand yet drive the shaft 4 forward, the clutch 11 should be thrown out ofoperation. The brake-strap 29 should then be tightened on the drum 2l,thus holding the drum stationary with respect to the parts 8 and 4. Theresult of this movement since the clutch 24 is normally in the positionshown is that as the drum 8 and gear 1G turn they will drive the pinions17, and these pinions being meshed with the stationary gear-ring 23 willreact on the shafts 1S, and thus, through the medium of the clutch 24,drive the shaft4 forward, but at a reduced speed, depending obviouslyupon the ratio between the various gear elements involved.

To drive backward, the brake 29 should be relaxed and the clutch 24should be thrown over to its leftwardmost position, thus fastening thedrum 2l. to the shaft 4 and releasing the drum 19. The brake 2O shouldthen be tightened, holding the drum 19 stationary with respect to thevarious parts of the gearing. Movement from the drum 8 will now turn thegear 16, and the drum 19 and shafts 18 being held stationary the gears17 will turn around their axes and will impart a backward rotarymovement to the drum 21, which in turn will drive the shaft 4 throughthe clutch 24.

The manner of applying the invention will be readily understood by allpersons skilled in the art, and various changes in minor features anddetails of the apparatus may be resorted to at wilt-such, for example,as modiieations in the forms of clutches or the size and arrangementofthe gears-as long as the vital principle is retained as specified in theclaims.

When the parts are not working, the brakestrap may be applied to thedrum which is locked to the shaft, thus making it possible to use theapparatus as a means for controlling the movement of the vehicleitself-that is to say, as an ordinary brake. Assuming that the parts arein the adjustment shown in Fig. 1, the strap 29 being loosened, thestrap 2O may be at any time applied to the drum 19, thus retarding, oreven stopping, the movement of the shaft and of the parts connectedthereto.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination of a driving part, a driven part,a means for holding the two stationary in relation to each other, tworotary drums turning around the driven part, a means for connectingeither one of said drums to the driven part to turn therewith, a gear onone drum, a pinion mounted loosely on the other and meshing with thegear on the first drum, a gear connected to turn with the driving partand in mesh with the pinion, and

means for stopping the movement of either of the drums.

2. The combination of a rotary shaft, a driving member arranged to turnaround it, a means for holding the driving member stationary with theshaft, two drums mounted on the shaft, means for connecting either ofthe drums with the shaft, means for holding either drum againstrotation, an internal gear formed on one drum, a pinion mounted looselyon the other drum and meshed with the internal gear, and a gearconnected with the driving member and meshed with the pinion.

3. The combination of a rotary shaft, a driving member mounted looselythereon, a clutch for holding the driving'member stationary with theshaft, two drums mounted on the shaft, a clutch for connecting either ofthe drums with the shaft, an internal gear formed on one drum, a pinioncarried on the other drum and meshed with the internal gear, a gear inconnection with the driving member and meshed with the pinion, and abrake for each drum.

4. The combination of a driving part, a driven part, a releasable meansfor holding the two together, two drums, coacting gears carriedrespectively on the drums, a gear in connection with the driving partand meshed with one of the other gears, means for fastening each drum tothe driven part, and a brake for each drum, for the purpose specified.

5. The combination of a driving part, a driven part, a releasable meansfor holding the two together, two rotary members, coacting gears carriedrespectively on said members, a gear in connection with the driving partand meshed with one of the other gears, means for connecting either ofsaid members to the driven part, and means for holding either of saidmembers stationary.

6. The combination of a driving part, a driven part, a releasable meansfor holding the two together, two drums, coacting gears carriedrespectively on the drums, a gear having connection with the drivingpart and meshed with one of the other gears, means for fastening eachdrum to the driven part, and a brake for each drum, for the purposespecified.

7. The combination of a driving part, a driven part, means for holdingthe two together, two rotary drums turning around the axis of the drivenpart, a means for connecting either one of said drums to the driven partto turn therewith, a gear on one drum, a second gear mounted loosely onthe other drum and meshing with the gear on the first drum, a gearconnected to turn with the driving part and in mesh with the secondgear, and means for arresting the movement of either of the drums.

8. The combination of a driving part, a driven part, means for holdingthe driving member stationary in relation to the driven member, twodrums mounted to turn on the driven member, means for connecting eitherIOO IIO

of the drums with the driven member, means for arresting the movement ofeither drum, a gear on one drum, a second gear mounted loosely on theother drum land meshed with the first-named gear, and a gear connectedWith the driving member and meshed with the second-named gear.

9. The combination of a rotary shaft, two drums mounted to turn aroundit, means for connecting either of said drums with the shaft, means forarresting the movement of either drum, gears carried respectively on thedrums and meshedtogether, a constantlydriven gear meshing with one ofthe firstnamed gears, and releasable means for connecting the rotaryshaft with said constantlydriven gear. y

10. The combination of a rotary driven member, two drums arranged toturn around the axis thereof, means for connecting either of said drumsto the said driven member, means for holding either drum againstrotation, an internal gear on one drum, a pinion carried on the otherdrum, said pinion projecting through an orice in the web of the drum onwhich it is carried to mesh with the internal gear, and aconstantly-driven gear meshing with the pinion.

11. The combination of a driving part, a driven part in the form of arotary shaft, two drums mounted on the shaft, eoacting gears carriedrespectively on the drums, a gear con-v nected with the driving part andmeshed with one of the first-named gears, means for fastening either ofsaid drums to the shaft, operating devices for said means, the operatingdevices extending loosely through the shaft, and means for arresting themovement of either drum.

12. The combination of a driving part, a driven part in the form of arotary shaft, two drums mounted on the shaft, coacting gears carriedrespectively on the drums, a gear connected with the driving part andmeshed with one of the first-named gears, means for fastening either ofsaid drums to the shaft, operating devices for said means, the operatingdevices extending loosely through the shaft,

means for arresting the movement of either drum, means for holding thedriving part and shaft together, and operating devices for said lattermeans, said operating devices also extending loosely through the shaft.I

13. The combination of a driving part, a driven part in the form of arotary shaft, two

drums mounted on the shaft, coacting gears respectively carried on thedrums, a gear connected with the driving part and meshed with one of therst-named gears, a clutch mounted on the shaft and movable from one drumto the other to fasten either drum to the shaft, operating devices forthe clutch, the operating devices extending loosely through the shaft,and means for arresting the movement of either drum.

14. The combination'of a driving part, a driven part in the form of arotary shaft, a clutch for holding said parts together, operating meansfor the clutch, the operating means extending loosely through the shaft,two drums mounted to turn on the shaft, means for connecting either drumto the shaft, means for arresting the movement of either drum, coactiuggears carried respectively on the drums, and a gear in connection withthe driving member and meshed with one of the first-named gears.

In testimony whereof l have signed my name to this specification in thepresence of two subscribing witnesses.

ALDEN E. OSBORN.

Witnesses:

JOHN H. GRATACA, W. W. OsBoRN.

